Incinerator



A. P. SAHA INGINERATOR Filed May 1e, 1928 INVENTOR atto P. Saha BY ATTORNEY April 15, 1930.

WITNESSES Patented Apr. 15, 1930 UNITED STATES AATTO P. SAHA, F BROOKLYN, NEW YORK INCINERATOR Application led May 16, 1928. Serial No. 278,325.

This invention relates to ncinerators, and has for an object to provide an improved construction wherein substantially a new form of incinerating oven may be used whereby an improved combustion is secured.

Another object is to provide in an incinerator a blast or sheet of air acting as a damper capable of permitting objects to pass therethrough while directing gas and flames in a desired direction.

A further object, more specifically, is to provide an improved arrangement wherein articles may be dropped from above downwardly into the oven while movementv of air prevents gas or smoke from escaping through the entrance opening of the articles fed into the oven or furnace.

In the accompanying drawings,-

Figure 1 is a longitudinal vertical sectional 2o View through an incinerator disclosing an embodiment of the invention;

Figure 2 is a sectional view through Figure 1 on the line 2-2 thereof g' Figure 3 is a view similar to Figure 2 but showing a slightly modified construction thereof.

Referring to the accompanying drawings by numerals, 1 indicates the usual down chute or pipe found in incinerators now coma chute for receiving packages from different floors and permitting .the packages to drop downwardly into the furnace chamber 2, but acts as a chimney to carry ofil the smoke and produce a desired draft. The chamber 2 is formed from suitable walls forming part of the complete incinerator 3. These walls not only form the chamber 2, but form passageways A, 5, 6, 7 and 8. When the incinerator is operating properly smoke, gases and odors, as well as the flames, pass through the passageway i into the combustionchamber or passageway 5 and thence through passageways 6, 7 and 8 to the chute or chimney 1. By reason of the passage of the gases in this pathmost of the gases and odors are consumed, and consequently objectionable odors will not passout of the chimney 1. In forming the chamber 2, a grate 9 .of any desired kind may be used and also an ash pit 3 havmonly on the market. This chute is not only ing a door 20. The door 20 and an inlet 21 are provided for admitting the desired amount of air into the chamber 3, which air may pass upwardly .into chamber 2 to support combustion. In order for the air to pass in this manner, air passes through slots 10 in a thin sheet and is discharged below the member 11 so as to venter substantially centrally the passageway 4. The slot 10 may be made in the wall of the incinerator but is preferably formed as part of a metal air guiding spout 12. This spoutis preferably flaring at the outer part to provide a tapered opening '13 which receives air from the air chamber `14 formed in the wall 15, and air inlet 16 is formed in wall 15 but is normally closed by suitable plate 17. A fan 18 is provided, said fan acting to force air into chamber 14 and thence through the slot 10. Fan 18 may be of any desired kind, but is preferably a power driven fan and is used preferably only when the fire is first started in chamber 2. The incinerator 3 is adapted to be installed in the basement or at a suitable point below the lowermost floor of the building, and the smoke stack or chute 1 is designed to extend upwardly to a point preferably slightly above the top of the building.

On each floor there are provided doors and other means whereby bundles of garbage,

trash and the like may be deposited in the chute 1 and allowed to drop by gravity downwardly onto the grate 9. In dropping downwardly the various articles pass through the opening 19. The janitor or other workman ignites the matter deposited on the grate 9 preferablvbefore the matter is suilicient in volume to reach the opening 19. Immediately after the fire has been started fan 18 is started so that a sheet of air will be driven across the opening 19. This will cause the smoke, odor and unburned products of combustion to pass through the passageway 4 and thence around to the chimney or chute 1 above the opening 19. During the movement through this passageway most of the gases will be consumed, so that the odor is practically eliminated. While this is taking place, anyone may drop additional articles downwardly and said additional articles will pass through the opening 19 and through the sheet of a1r without permitting any of the smoke to pass upwardly through opening 19.

In Figure 3 a slightly modified construction is shown wherein a plurality of slots 10 are provided instead of a single slot as shown in Figure 2. These slots divide the air into jets which mingle as they pass beneath the member 11. It is thus seen that not only is the smoke and other matter prevented from entering directly into chimney 1 but additional air is provided for causing the combustion of gases in the passageway or chamber 5 and associated passageways. These desirable features are provided while at the same time permitting the continuous use of chute 1 and the ready dischargeof matter into chamber 2 at all times.

lVhat I claim is l. An incinerator, including a furnace chamber, means forming a tortuous passageway extending from said chamber, means forming a smokestack, the smokestack merging at one point into said tortuous passageway and at a lower point into the upper part of said chamber, and means forming an air damper extending across said lower point, whereby an article passing downward through the smokestack may drop directly into said furnace chamber through said air damper while the smoke and products of combustlon are directed through said tortuous passageway into said smokestack above said lower point. f

2. An incinerator, including means forming a furnace chamber, eans forming a smokestack arranged above t e furnace chamber with the lower end opening directly into the furnace chamber, means forming a tortuous passageway leading from the upper part of the furnace chamber to the lower part of the chimney but above the point where the chimney opens into the furnace chamber, and means producing an air damper opposite the inlet to said tortuous passageway, said air damper extending across the lower end of the smokestack and into the inlet of said tortuous passageway.

3. An incinerator, including means forming a furnace chamber having an opening in one side of the top and a second opening in one side wall at the top, a smokestack arranged in vertical alignment with the firstmentioned opening and positioned to discharge through said irst-mentionel opening and into the furnacechamber,said smokestack extending to said first-mentioned opening, so that matter passing down the smokestack will pass therethrough into said furnace chamber, means forming a tortuous passageway leading from the second-mentioned opening to said smokestack, said tortuous passageway discharging into said smokestack above the second-mentioned opening, and means producing an air damper, said a1r damper eX- of May, A. D. 1928.

AATTO P. SAHA. 

